Reversible link-motion



3 Sheets-Shegt 1. E. HUBER.

REVERSIBLE LINK MOTION.

(No Model.)

' Patented May 9, 1882' llHllllllIll WW. I

J54 are w M Z1224 W/tfiwesse-s N. PETERS. photo-Lithographer, wanlu'n ton. D. c.

(NoModeL) 3 Sheets-Sheet 2. BHUEBR.

REVERSIBLE LINK MOTION. V I N0. 257,710. Patented May 9, 1882,.

N. PETERS. Phohrljihogniwhnr. Wahinglcn, D. c.

(No Model.) a Sheets-Sheet s.

E. HUBER.

REVERSIBLE LINK MOTION.

No. 257,710. Patented May 9, 1882 am, 06.. dww

@Z @714 fidw N. PETERS, Photo-Liihognpher, Washinglun. RC.

UNITED STATES PATENT OFF CE.

EDWARD HUBER, OF MARION, OHIO.

REVERSIBLE LINK-MOTION.

SPECIFICATION formingpart of Letters Patent No. 257,710, dated May 9, 1882.

Application filed February 10, 1882. (No modeLl To all whom it may concern:

Be it known that I, EDWARD HUBER, of Marion, in the county of Marion, and in the State of Ohio, have invented certain new and useful Improvements in Reversible Link-Mo tions and I do hereby declare that the followin g is a full, clear, and exact description there: of, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of-this specification.

This invention relates to improvements on link-motions or reversing -links which are especially designed for use on locomotives, traction-engines, and other similar engines for reversing the same or rendering the valve inactive, as may be desired.

The nature of myinvention consists mainly in the combination of a segmental toothed rack, a link, and a pinion which is supported on the frame of the valve rock-arm; also, in combining with the above-stated elements a shaft which is free to move endwise through the pinion-shaft, and which is provided with a lever having a latching device for engaging with notches formed in a dial or stationary circular flange, as will be hereinafter explained.

In the annexed drawings, Figure l is anelevation of one side of my improved reversing link-motion. Fig. 2 is an elevation of the opposite side thereof. Fig. 3 is a horizontal section in theiilane 0a a: on Figs. 1 and 2. Fig. 4. is a vertical transverse section in the plane y y, Figs. 1 and 2. Fig. 5 is a modification of the devices for operating the pinion and link.

The following description of myinvention, when taken in connection with the annexed drawings, will enable others skilled in the art to understand it.

A designates a horizontal shaft or axle provided with suitable journal-boxes, and having suitably applied to it two eccentrics, which are set on their axle or shaft, as shown in Fig. 1. These eccentrics B B are loosely embraced by the yoked ends of rods 0 G, the opposite ends of which are connected to theupper and lower ends of a segment shaped link, 1), by meausofpivot-pinsac. (ShowninFig.1.) This linkD is slotted longitudinally, and it receives in its slot a block, E, which serves as its guide, and which oscillates on a short pin, 0, that is rigidly secured to the arm I) of an oscillating ing the same center as the link D.

It will be seen that when the segment is on the center, as shown in Figs. 1 and 2., the valve rock-arm H will not receive motion from the shaft A, and hence the valve will be inactive, and that in proportion as the link is raised above said center the valve will cut off faster. It will also be understood that when thelink is depressed below said dead-center the motion of the valve will be reversed.

On one end of the rock-shaft G is keyed rigidly an arm, K, having a large eye-bearing, K, in its upper part, in which is suitably ap plied another ring, L, that affords a bearing for the square portion of the rod M. On this rod M is applied a pinion spur-wheel, N,through the hub of which and the bearing ring L the square part of the rod M can move end wise, but not turn. The teeth of pinion-wheel N engage with the rack-teeth d on the side of the segment J, which is secured to the link D. The rod M is supported near its outer end by a bearing centrally arranged with respect to a circular dial or flange, O, which is suitably se cured to the frame of the locomotive, and which is provided with numerous notches, e, in its edge, located at certain determined points. An arm, P, is keyed on the shaftM and pro vided with a latching device, 9, for engaging it with any one of the notches 6, according to the position in which it is desired to adjust the throw of the valve, to cut off or reverse, or, to remain inactive. It will be seen from the above description that by my invention there can be no slip in the block, as the link is always suspended by the cogs of the pinion and rack opposite the same point as the block is sustained on the pm 0.

Fig. 5 shows a modification of the means above described for moving the pinion N. This consists in having beveled teeth h on one side of said pinion, and engaging therewith a beveled spur-wheel, i, which receives rotation in either direction from a rack-bar, j, by means of intermediate spur-wheel, 7c. The rack-bar j is reciprocated by means of the hand-lever S. In this Fig. 5, D designates the link, J the rack-plate secured thereto, F theoscillating frame, and K the bearing-arm.

The main frame of the engine, to which the apparatus will be applied, is not represented in the drawings. The rack and its link are seured together, and are applied on a block, E, (see Fig. 3,) which is free to oscillate on a pin, a. This pin is rigidly secured to the arm I) of the frame F. The pinion N also has its bearing on a shaft which is supported by an arm secured to the said frame F. It will thus be seen that the link and its rack and the pinion are between two arms of the oscillating frame F, which arms will keep the rack and pinion engaged. The thickness of the teeth of the pinion is such that sufficient play is allowed between these teeth and those of the on a shaft or axle, the toothed rack applied rigidly to the link, and a pinion having its bearing on the rook-arm frame, substantially as described.

2. The combination of the frame F, adapted to rock in suitable bearings, the valve rockarm H on this frame, the block E, oscillating on the pin 0 on the arm I) of said frame F, the verticallyadjustable link receiving oscillation from eccentrics on a shaft or axle, A, the toothed segment J, the pinion N, the bearingarm K, and means, substantially as described, for turning said pinion and sustaining the link at any desired point of adjustment.

3. The oscillating stirrup-shaped frame F, bearing the valve rock-arm H, the block E,

and the arm K, in combination with the rackplate J, the pinion N, means for turning this pinion and looking it, and means for oscillating the link and its segment-plate, substantially as described.

In testimony whereof I affix my signature,

in presence of two witnesses, this 7th day of February, 1882.

EDWARD HUBER. Witnesses:

J. E. DAVIDS, H. GREEN. 

